本文選題：中置式開關(guān)柜 + 機(jī)械　； 參考：《山東大學(xué)》2016年碩士論文

【摘要】：日照電網(wǎng)有1OKV及以上高危重點(diǎn)客戶46個(gè),運(yùn)行中置式(鎧裝金屬封閉)開關(guān)柜的客戶配(變)電站的152座,占總數(shù)98.06%。中置式開關(guān)柜作為電網(wǎng)中客戶主要變(配)電運(yùn)行設(shè)備,每年都發(fā)生因開關(guān)拒動(dòng)、短路、絕緣等故障造成的停電事件,不僅給電力客戶帶來(lái)較大的經(jīng)濟(jì)損失,而且嚴(yán)重威脅到設(shè)備的安全運(yùn)行,如不及時(shí)采取有效措施,預(yù)防生產(chǎn)活動(dòng)中潛在的安全風(fēng)險(xiǎn),會(huì)引發(fā)人身、電網(wǎng)和設(shè)備事故,給企業(yè)正常生產(chǎn)、安全運(yùn)行、持續(xù)發(fā)展帶來(lái)重大的負(fù)面影響。本文從人員、設(shè)備、材料、環(huán)境四個(gè)主要方面分析了中置式開關(guān)柜在設(shè)計(jì)標(biāo)準(zhǔn)、生產(chǎn)制造、安裝運(yùn)行中可能存在的故障隱患,積極探索加強(qiáng)客戶用電安全,減少中置式開關(guān)柜故障次數(shù)的新方法和新措施,以提高中置式開關(guān)柜運(yùn)行可靠性,確保用電設(shè)備安全運(yùn)行,促進(jìn)客戶用電安全水平的提高。本文主要從以下幾方面開展研究：一、對(duì)日照電網(wǎng)中置式開關(guān)柜的運(yùn)行情況進(jìn)行分析,對(duì)故障發(fā)生時(shí)間、類型、地點(diǎn)進(jìn)行統(tǒng)計(jì),對(duì)故障設(shè)備和故障點(diǎn)進(jìn)行解剖,對(duì)故障現(xiàn)場(chǎng)進(jìn)行調(diào)查,確定了機(jī)械裝置和絕緣設(shè)備是設(shè)備的主要故障部分。二、采用現(xiàn)場(chǎng)驗(yàn)證試驗(yàn)和設(shè)備數(shù)據(jù)測(cè)量的方式對(duì)開關(guān)柜機(jī)械故障原因剖解,確定了動(dòng)、靜觸頭接觸行程不夠,機(jī)械傳動(dòng)機(jī)構(gòu)未定期進(jìn)行檢測(cè)、維護(hù)是機(jī)械故障的主要因素,采取增加靜觸頭長(zhǎng)度、調(diào)整機(jī)械傳動(dòng)機(jī)構(gòu)等設(shè)備改造方式,提升效果顯著。三、對(duì)開關(guān)柜的絕緣部分進(jìn)行統(tǒng)計(jì)分析,對(duì)絕緣損壞部件進(jìn)行測(cè)量,發(fā)現(xiàn)開關(guān)柜內(nèi)散熱不暢、溫度較高,高壓室及開關(guān)柜密封不嚴(yán)是導(dǎo)致絕緣件老化損壞的主要因素,采取了安裝柜內(nèi)的散熱裝置,降低母排、刀閘的接觸電阻,開關(guān)柜防塵、防潮處理等改造方案后,設(shè)備絕緣故障次數(shù)明顯下降。根據(jù)課題研究成果,調(diào)整了開關(guān)柜的運(yùn)行方式和制造標(biāo)準(zhǔn),編寫了《日照供電公司業(yè)擴(kuò)工程設(shè)計(jì)規(guī)范》、《日照供電公司客戶設(shè)備管理規(guī)定》、《日照供電公司開關(guān)柜施工標(biāo)準(zhǔn)》等設(shè)備管理的相關(guān)文件和工作規(guī)定,提升了設(shè)備標(biāo)準(zhǔn)和施工要求,在日照電網(wǎng)所有中置式開關(guān)柜中進(jìn)行了技術(shù)推廣,有效的減少了日照地區(qū)中置式開關(guān)柜故障次數(shù),增強(qiáng)了設(shè)備運(yùn)行的可靠性,提升了電網(wǎng)安全運(yùn)行水平,實(shí)現(xiàn)了經(jīng)濟(jì)效益和社會(huì)效益的雙提升。
[Abstract]:Rizhao Power Grid has 46 key customers with high risk of 1OKV and above, and 152 power stations operating medium type (sheathed metal closed) switchgear, accounting for 98.06% of the total. As the main transformer (distribution) equipment in the power network, the central switchgear happens every year, which is caused by the failure of switch, short circuit, insulation and so on, which not only brings great economic losses to the power customers. And it is a serious threat to the safe operation of equipment. If effective measures are not taken in time to prevent potential safety risks in production activities, it will lead to accidents of persons, power grids and equipment, and give enterprises normal production and safe operation. Sustained development has a significant negative impact. This paper analyzes the potential faults in the design standard, production, manufacture, installation and operation of the central switchgear from four main aspects: personnel, equipment, materials and environment, and actively explores how to strengthen the safety of the customer's electricity consumption. The new methods and measures to reduce the number of faults of the central switchgear are proposed in order to improve the reliability of the operation of the central switchgear ensure the safe operation of the electric equipment and promote the safety level of the customers. This paper mainly carries on the research from the following aspects: first, analyzes the operation situation of the Rizhao power grid switchgear, statistics the time, type and location of the fault, dissects the fault equipment and the fault point. The fault site was investigated and the mechanical and insulation equipment were determined to be the main fault parts of the equipment. Second, by means of field verification test and equipment data measurement, the causes of mechanical failure of switchgear are analyzed, and it is determined that the contact stroke of moving and static contacts is not enough, the mechanical transmission mechanism is not detected regularly, and maintenance is the main factor of mechanical failure. By increasing the length of static contact, adjusting the mechanical transmission mechanism and other equipment transformation, the effect is remarkable. Third, the insulation part of the switchgear is statistically analyzed, and the insulation damaged parts are measured. It is found that the heat dissipation in the switchgear is not smooth, the temperature is relatively high, and the seal of the high-voltage chamber and the switchgear is not strict are the main factors leading to the aging and damage of the insulating parts. After adopting the retrofit scheme of installing heat dissipation device in the cabinet, reducing the contact resistance of the busbar, the knife brake, the dust prevention of the switchgear and the moisture-proof treatment, the number of insulation faults of the equipment is obviously decreased. According to the research results of the subject, the operation mode and manufacturing standard of the switchgear are adjusted. The related documents and working regulations of equipment management, such as "Design Specification for Industrial expansion Project of Rizhao Power supply Company", "Rizhao Power supply Company customer equipment Management regulations", "Rizhao Power supply Company Switchgear Construction Standard", etc., have been compiled, and the equipment standards and construction requirements have been raised. The technology is popularized in all the middle type switchgear in Rizhao power network, which effectively reduces the number of faults of the middle type switchgear in Rizhao area, enhances the reliability of the equipment operation, and promotes the safe operation level of the power grid. The double promotion of economic and social benefits has been realized.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM591

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本文編號(hào)：2010275